<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <form action="./content.html">
        <h1>登录</h1>
        <input type="text" name="username">用户名</br> 
        <input type="password" name="password">密码</br>  
        <input type="submit" name="提交">     
    </form>
</body>
</html>